Peavey A/A 4-AC Phantom Power Supply is a device that provides +48 volt phantom power for up to four condenser microphones. It can be plugged into a conventional AC power outlet and incorporates a power on/off switch and associated LED power indicator. The A/A 4-AC utilizes premium XLR connectors with female inputs and male outputs. A ground lift switch is incorporated which will disconnect the incoming or outgoing microphone shields from the internal system ground to minimize hum due to ground loops.